One of the nation’s leading gay rights organizations is slamming Chris Brown for his homophobic rant during a pick-up basketball game, branding his behavior “unacceptable”.

The controversial hip hop star yelled abusive slurs, including ‘That’s gay!’ and ‘You’re a f*gg*t a**!’ at other players during a game at a Los Angeles gym on June 29, according to an eyewitness who spoke exclusively to Star magazine – the story was first reported via RadarOnline.com early Wednesday.

“To demean gay people is encouraging others to engage in the same behavior. These kinds of slurs are unfortunately heard on playgrounds and even from figures in popular culture. We need to become more serious about it and stop it.

“When words like these are so commonly used they become acceptable and that’s not right. One of the reasons why these slurs have become so common in schools and other places is because role models, like Chris Brown, engage in these activities and use these words. It needs to stop.”